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Kartik Agaram 2018-11-25 14:06:22 -08:00
parent 50dcc0c122
commit f15fcfe822
1 changed files with 7 additions and 7 deletions
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subx/opcodes
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@ -76,17 +76,17 @@ Opcodes currently supported by SubX:
c7: copy imm32 to rm32 (mov)
cd: software interrupt (int)
e8: call disp32 (call)
e9: jump disp16 bytes away (jmp)
e9: jump disp32 bytes away (jmp)
eb: jump disp8 bytes away (jmp)
f4: halt (hlt)
f7: negate/multiply rm32 (with EAX if necessary) depending on subop (neg/mul)
ff: increment/decrement/jump/push/call rm32 based on subop (inc/dec/jmp/push/call)
0f 84: jump disp16 bytes away if equal, if ZF is set (jcc/jz/je)
0f 85: jump disp16 bytes away if not equal, if ZF is not set (jcc/jnz/jne)
0f 8c: jump disp16 bytes away if lesser, if SF != OF (jcc/jl/jnge)
0f 8d: jump disp16 bytes away if greater or equal, if SF == OF (jcc/jge/jnl)
0f 8e: jump disp16 bytes away if lesser or equal, if ZF is set or SF != OF (jcc/jle/jng)
0f 8f: jump disp16 bytes away if greater, if ZF is unset and SF == OF (jcc/jg/jnle)
0f 84: jump disp32 bytes away if equal, if ZF is set (jcc/jz/je)
0f 85: jump disp32 bytes away if not equal, if ZF is not set (jcc/jnz/jne)
0f 8c: jump disp32 bytes away if lesser, if SF != OF (jcc/jl/jnge)
0f 8d: jump disp32 bytes away if greater or equal, if SF == OF (jcc/jge/jnl)
0f 8e: jump disp32 bytes away if lesser or equal, if ZF is set or SF != OF (jcc/jle/jng)
0f 8f: jump disp32 bytes away if greater, if ZF is unset and SF == OF (jcc/jg/jnle)
0f af: multiply rm32 into r32 (imul)
Run `subx help instructions` for details on words like 'r32' and 'disp8'.
For complete details on these instructions, consult the IA-32 manual (volume 2).